基于蝙蝠算法的适线法求解水动力弥散系数-煤田地质与勘探.pdf

第44 卷 第4 期 煤田地质与勘探 Vol. 44 No.4 2016 年8 月 COAL GEOLOGY EXPLORATION Aug. 2016 文章编号: 1001-1986(2016)04-0081-05 基于蝙蝠算法的适线法求解水动力弥散系数 1 1 1 1 1 2 李世钰 ，刘国东 ，王 亮 ，邢 冰 ，任玉峰 ，李昕妍 (1. 四川大学水力学与山区河流开发保护国家重点实验室/水利水电学院，四川 成都 610065 ； 2. 长安大学，陕西 西安 710064) : 利用弥散资料确定含水层弥散系数的标准曲线法在具体应用中存在较大的随意性，用一种 基于蝙蝠算法的适线法进行一维流动二维水动力弥散模型中弥散系数的识别，在一定程度上解决 了传统的标准曲线法求解含水层弥散系数中主观因素造成较大误差的现象，并能直接得出地下水 流速。实例计算结果表明，基于蝙蝠算法的适线法是求解水动力弥散系数的一种高效方法，可广 泛用于求解其他水文地质问题。 ：蝙蝠算法；标准曲线法；弥散系数；弥散试验 ：P641.2 ：A DOI: 10.3969/j.issn.1001-1986.2016.04.016 Computation of hydrodynamic dispersion coefficient with curve fitting method based on bat algorithm 1 1 1 1 1 2 LI Shiyu , LIU Guodong , WANG Liang , XING Bing , REN Yufeng , LI Xinyan (1. State Key Labrary of Hydraulics and Mountain River Engineering, College of Water Resource Hydropower, Sichuan University, Chengdu 610065, China; 2. Chang′an University, Xi ′an 710064, China) Abstract: Standard curve method is the most commonly used way to determine the dispersion coefficient of aquifer. But its main drawback is that curves are often relied solely on individual manipulation. In view of curve fitting method, we proposed a new metaheuristic method: bat algorithm(BA), which is based on the echolocation behavior of bats, to identify the coefficient of one-dimensional flow two-dimensional hydrodynamic model. The bat algo- rithm can reduce the main error to some extent which is caused by fitting curve subjectively. Moreover, groundwa- ter velocity can be obtained directly. The case study results indicates th